Budhvar, Wednesday, is dedicated to Lord Krishna and the planet Budh or Mercury. The day is also associated with Lord Vithal, an incarnation of Krishna. In some regions, Lord Vishnu is worshiped. Keeping a fast (Upvaas) on Budhvar is believed to help in leading a peaceful family life.

Those devotees who undertake a fast on the day only take a single meal in the afternoon. The fasting is observed mainly by husband and wife together. Green color is considered highly auspicious on the day.

In Astrology, mercury is considered to be compassionate and generous. Mercury is usually depicted riding a lion.

In some regions, people start new ventures on Wednesday as Mercury or Budh is considered to help new business ventures. Educational activities begin on Wednesday in some places.